A preeminent violinist stopped by our studios yesterday. The breadth of Mark O'Connor's work is nothing short of astonishing, yet one wonders how he remains so humble and approachable. He leaps from one idiom to another in effortless fashion, as you will encounter after listening to his interview with WBGO's Bill O'Donnell. He's one of the original cross-over musicians, equally adept at playing in classical, country, world, or jazz styles. He talks about his new orchestral work "Americana" being recorded this month by The Baltimore Symphony Orchestra with Marin Alsop, his fondness of for bluegrass fiddler Benny Thomasson, and his upcoming performance with his "Hot Swing Trio" at the Tanglewood Jazz Festival this Labor Day Weekend. - Simon Rentner